Briefly describe how the angiosperm population in a community would be impacted if the honeybee population were to decline.
What will be an ideal response?
Answers may vary. Honey bees are a critical pollinator for a wide variety of angiosperms. If the honey bee population were to decline then the number of angiosperms pollinated would also decline. This could lead to a decrease in various angiosperm populations within the community.
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A toxin that binds specifically to voltage-gated sodium channels in axons would be expected to _____
A) prevent the hyperpolarization phase of the action potential B) prevent the depolarization phase of the action potential C) prevent graded potentials D) increase the release of neurotransmitter molecules E) have most of its effects on the dendritic region of a neuron
An epithelial tissue can best be defined as:
A. a collection of layered cells. B. a collection of contractile cells. C. a network of cells that use chemical communication. D. a few cells embedded into an extensive extracellular matrix.
Internal pH changes of a bacterium can cause drastic problems for the cell. Which of the following situations do not occur when the internal pH of a bacteria changes?
A) Lethal denaturing of enzymes B) Limited production of ATP C) Altered membrane potential of the cell D) Endospores enter the vegetative cycle
An evolutionary stable strategy (ESS) is:
a. a strategy that if adopted by all members of the population cannot be invaded by a mutant strategy. b. a strategy that if adopted by part of a population cannot be invaded by a mutant strategy. c. a mutant strategy that cannot invade a population. d. a strategy that if adopted by all members of the population can be invaded by a mutant strategy.